US 1395432 A
Description (OCR text may contain errors)
J. M. KROYER.
CLEAT FOR TRACTOR WHEELS.
PPLlcfmoN HLED MAY21.1920.
Patented Nov. 1, 1921.
JOHN MNOR KROYER, OF STOCKTN, CALIFORNIA.
CLEAT FOR TRACTOR-WHEELS.
Application filed May 21,
To all fw /Lom t may concern Be it known that L'JOHN MiNon KROYER, a citizen of the United States, and av resident of Stockton, in the county of San Joaquin and State of California, have invented a newand luseful Improvement in Cleats for Tiactor-VVlieels, of which the following is a full, clear, and exact description.
My invention relates to improvements in cleats or grips for tractor wheels, and it consists in the combinations, constructions and arrangements herein described and claimed.
An object of my invention is to provide a cleat or grip which is especiallyv designed for that type of tractor set forth in my prior Patent No. 1308790, of July 8, 1919. In said prior patent I have disclosed a tractor, the four wheels of which arefmounted on rigid axles, power being applied to each wheel, and the wheels on either side being arranged to be released from the driving mechanism, whereby the device is caused to turn through the operation of the wheels on the other side to which power is being applied.
As disclosed in the above mentioned patent, there is a sled-like action when the tractor is turned, the cleats or grips acting as runners.
A further object of my invention is to provide a cleat or grip which pfermits of a sliding ,movement with a minimum of power, both ends of the cleat being beveled so that there is a lifting effect, tending to raise the wheels out of the ground, instead of causing the cleats or grips to plow through the ground, as they might do were such beveled ends not provided.
A further object of my invention is to provide a cleat which may be set at an angle with respect to the axis of the wheel, and which presents a sharp edge at either end of the cleat which is in line with the direction of movement as the vehicle is turned either when proceeding forwardly or when backing up.
A further object of my invention is to provide a cleat in which a maximum gripping effect is secured and in which the contour of the cleat permits it to be drawn out of the depression made in the soil, just as a pattern is drawn from the mold, a'. e., so as not to disturb the ground on either side Specification oi Letters Patent.
` Patented Nov. 1, 1921.
i920. Serial No. 383,181.
of the depression, while, at the same time, securing a maximum tractive effect. a Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.
My invention is illustrated in the accompa'nying drawings, forming part of this application, in whicl Figure 1 is a diagrammatic view showing four tractor wheels, and the manner in `which the cleats or grips are arranged thereon,
Fig. is an end view of a cleat showing its relative position on a trac-tor wheel,
Fig. 3 is a perspective view of the cleat looking from one end thereof,
Fig. et is a perspective view of the cleat looking from the opposite end,
Fig. 5 is an enlarged view showing the end of the cleat, and
Fig. 6 is a'diagrammatic view showing the relative position of the cleat with respect to the upper right hand wheel, as shown in Fig. l, when the cleat is in the ground.
In carrying out my invention, I make use, as stated. of a tractor having four wheels, such as those shown at 1, 2, 3 and 4, and front wheels 1 and 2 being on a rigid axle 5, and the rear wheels 3 and 4 being on a rigid axle 6. A series of cleats 7 is arranged around the periphery of each wheel, those cleats on the front wheel 1 and the rear wheel 4 being arranged oppositely from the `rcleats on the front wheel 2 and the rear wheel 3, as fully set forth in the prior patent mentioned above.
The present invention has to do more particularly with the form of cleat used. It will be observed from Figs. 3 and f1- that the device consists of a body portion havingr a flat side 8 which, as will be seen from Fig. 2, is disposed on the wheel 9 (shown in dot-ted lines), so that the fiat side 8 lies in a radial line through the center 0 of the wheel. The bottom l0 of the cleat is flat and of a sufficient width to permit the tractor to run on an asphalt pavement wit-hout destroying the appearance of the surface thereof. The face of the cleat opposite the flat face 8 is inclined thereto, as shown at 11. This permits the cleat or grip to be drawn out of the depression made by the grip without plowing up the ground. Each end of the cleat is beveled, as shown at 12 and 13,`and the beveled ends are rounded at the bottom as at 14;. Each of the cleats or grips is provided with flanges 15 having bolt holes 16, by means of which the cleat is secured to the periphery of the wheel. They are arranged so that the cleats which are gripping the ground` as, for instance, those shown in dotted lines in Fig. 1l on wheels 2 and et, are tangent to a circle about which the machine Yis turning, as explained in my prior patent. This arrangement provides a sharp edge 17 (see Fig. 6) on one end of the cleat, and a sharp edge 18 on the other end diagonally opposite.
From the foregoing description ofthe various parts of the device. the operation thereof may be readily understood. As stated, the device is turned by throwing olf power from the wheels on one line, as, forA instance, the wheels 2 and 1 in Fig. 1. The
water. As it is lifted, it meets with less resistance. The result is that the power necessary to turn the tractor is very materially cut down. The cleats or grips are so arranged on the wheels that the rear wheels Y will track with the front, that. is to say, they l will follow the same circle.
I have shown the body portion of the cleat as being hollow. rl`his is for the purposeof illustration only. In practice it The combination with a wheelof-a series of cleats secured 'to the rim, and disposed in angular relation with respect to the axis of the wheel, the opposed faces of the cleats inclining toward each other from the rim outwardly, the end edges of the cleats being parallel-to the edgesof the rim and the end faces of the cleats linclining toward Yeach other from'the peripheral surface'of the rim outwardly. l Y
JOHN MINOR Knor'nn.l